Variable exhaust for locomotives



2 Sheets-Sheet 1...

Vairia'bleBxhaust-for Locomotives.

o. 224,307; Patented Feb. 10, I880;

Fig.1

V'INVENTUHIY ROBERT HUD-D,

WITNESSES! 'ATTYS N. PETERS. PHOTO-LITNOGRAPHER, WASHINGTON. D. C;

. 2 Sheets-Sheet 2. R. RUDD; v Variable Exha-u'stfor Lo oomotives.

' No. 224,307. Patented Feb. 10. 1880.;

1 INVENTOH! ROBERT 'Fi'UD-D,

WITNESSES:

MFETERS. PHOTO-LITHDGRAPHER. WASHINGTON. D1 C.

UNITED STATES PAT NT OFFICE.

ROBERT" RUDDLOF ALEXANDRIA, VIRGINIA.

. VARIABLE EXHAUST FOR LOCOMOTIVES.

SPECIFICATION forming part of Letters Patent No. 224,307, dated Februarylo, 1880. I Application filed October 25, 1879. 7

To all whom it may concern Be it known that I, ROBERT RUDD, ofAlexandria, county of Alexandria, and State of Virginia, have invented an Improved Variable Exhaust for Locomotives; and I do hereby declare that the following is a full and exact description of the same, reference being had to the accompanying drawings, and to the letters of reference marked thereon.

This invention is a variable exhaust for locomotive-engines; and its novelty consists, mainly, in certain peculiarities'of construction by means of which great simplicity is obtainedwith eifectiveness of operation, as will be fully described hereinafter. I g

In the drawings, Figures 1 and 2 represent, respectively, a plan view and side elevation of the base-plate; Figs. 3 and 4, respectively, a plan view and sectional elevation "of the valve-rin g Figs. 5 and 6, respectively,a plan view and sectional elevation of the coverplate; Fig. 7, a sectional elevation of the base plate and yalve ring when properly placed together, and Fig. 8 a similar view of the base-plate, valve-ring, and cover-plate. Fig. 9 represents a plan view of Fig. 7 with the valve in its closed position; Fig. 10, a similar view with the valve in its open position. Fig. 11 represents a plan view of the baseplate and valve-ring of an exhaust having a single nozzle, and Fig. 12 a plan view of the same with the cover-plate in place.

To enable others skilled in the art to make and use my invention, I will now proceed to fully describe the same.

A, Figs. 1 and 2, represents what may be termed the base-plate, consisting of ametal disk, at, having the vertical walls a a, with main exhaust-ports a a extending through the same in a vertical direction, and auxiliary exhaust-ports a aflopeninig through the sides of the walls, as shown.

a a represent walls or partitions, the purpose of which will be fully explained hereinafter. 4

The circumferential faces a; of the walls are made to incline inward from the bottom upward, for purposes hereinafter explained.

B representswhat may be termeda valvering, which is provided with a bearing-face, 12, adapted to rest upon aproper seat upon the base-plate, and also with the inwardly-projecting portions 1) I), having the inner bearingfaces, W, as shown. These inner bearingfaces, it will be observed, are made inclined or tapering to correspond with the adjacent surfaces of the base-plate. 12 represents a handle, by means of which the valve-ring may be revolved.

O 0 represent thimbles inclosing the securing-bolts, which are made sufficiently long to prevent the cover-plate, when the same is bolted to the base-plate, from bearing upon the intermediate valve-ring with force enough to interfere with its movement.

D represents the cover-plate, consisting of a disk, 01, which has a circumferential flange, 01, .adapted to inclose the valve-ring. d d represent the main exhaust-openings in the coverplate, and d d the auxiliary exh aust-openin gs, both of which are provided with the usual nozzles.

The operation is substantially as follows: When the valve-ring is in the position shown in Fig. 9 the exhaust-steam from the cylinders passes through the main exhaust-ports in the base-plate and the main exhaust-openin gs in the cover-plate to the discharge-nozzles in the usual well known manner. When the walve is in the position shown in Fig. 10 the steam passes out through the main ports as before, andalso through the auxiliary ports and openings to the auxiliary nozzles.

The marked advantages resulting from the use of this class of devices are well known.

Some of the special advantages of construction are as follows:

By'means of the inclosure of the valve ring By the tapering form of the valve and itsseat the wear of the parts will be properly compensated for.

By the location of the vertical walls of the base-plate in a central position" and the arrangement of the valve-ring about it the exhaust is caused to deliver through the cover- I having the central vertical walls with exhaustplate always in a central position, the four jets of steam, when all the nozzles are delivering, uniting to form a single jet of great power.

Any suitable material may be employed in constructing the device, but cast-iron is preferred for the base and cover plate and brass for the valve-ring.

If desired, a modified form may be constructed with a single main exhaust-opening, as shown in Figs. 11 and 12.

This device may be used on stationary engines as well as locomotives.

Having thus described my invention, What I claim as new, and desire to secure by Letters Patent, is-

1. In combination with the base-plate A,

I ports, as described, the external valve-ring, B,

and the cover-plate U, the arrangement of the parts being such that the steam is exhausted in central jets into the stack, all constructed and arranged as shown and described. I

2. In a variable exhaust for locomotives, the combination, with the base and cover plate and the intermediate valve-ring, of the interposed thiinbles, substantially as described.

This specification signed and witnessed this 28th day of June, 1879.

ROBERT RUDD.

Witnesses:

A. N. HURDLE, GEO. DUFFEY. 

